Optical Element Driving Mechanism for Compact Image Stabilization
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Solution Overview
Problem
Conventional optical elements in electronic devices, such as camera modules, face challenges in achieving miniaturization while maintaining image quality and stability, particularly due to shaking issues that lead to blurry images.
Innovation Solution
A driving mechanism for optical elements comprising a support body, a movable portion, an elastic assembly, and a driving assembly, where the movable portion is suspended through the elastic assembly and driven by the driving assembly to adjust the optical element's position, incorporating a magnetic element and coil for stabilization and focusing, and a position sensing element for precise control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the lens module is made smaller for miniaturization, then device size is reduced, but image stabilization capability deteriorates
Solution Approach 1:
The lens module is divided into separate functional components: a support body for structural stability, a movable portion for optical element positioning, and an elastic assembly for shock absorption. This segmentation allows each component to be optimized independently, enabling miniaturization while maintaining stabilization capability through the specialized elastic support structure.
Solution Approach 2:
The patent implements a dynamic support structure where the movable portion can move relative to the support body through the elastic assembly. This dynamic configuration allows the optical elements to be precisely positioned and stabilized during operation, achieving both compact size and effective image stabilization through controlled movement rather than rigid fixation.
2Device complexity
If the lens module structure is simplified for miniaturization, then device complexity is reduced, but shockproof capability deteriorates
Solution Approach 1:
The elastic assembly is pre-configured between the support body and movable portion to provide shock absorption before external shocks occur. This beforehand cushioning mechanism protects the optical elements from damage during transportation or sudden movements, maintaining reliability without adding complex active protection systems.
Solution Approach 2:
The elastic assembly acts as an intermediary element between the rigid support body and the movable portion containing optical elements. This mediator absorbs mechanical shocks and vibrations, protecting the fragile optical components while maintaining a relatively simple overall structure that can be miniaturized.
3Volume of moving object
If the optical mechanism is compacted for miniaturization, then device volume is reduced, but optical compensation function deteriorates
Solution Approach 1:
The patent employs a nested configuration where the movable portion is positioned within the support body, and the elastic assembly is integrated between them in a space-efficient manner. This nesting allows the optical compensation mechanism to be compacted while maintaining the functional distance and alignment necessary for precise optical element positioning and compensation.
Solution Approach 2:
The invention utilizes vertical stacking and three-dimensional arrangement of components rather than only horizontal expansion. The elastic assembly and movable portion are arranged in layers within the support body, achieving optical compensation functionality in a compact vertical space, thus improving precision without proportionally increasing overall volume.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This configuration enables miniaturization of camera modules by stabilizing the optical element, reducing shake-induced blurriness, and enhancing the accuracy and sensitivity of optical adjustments, thereby improving image quality and device compactness.
Implementation Method 1
The elastic assembly is movably connected to the support body and the movable portion
Implementation Method 2
incorporating a magnetic element and coil for stabilization and focusing
Data Source
AI summary
A driving mechanism for an optical element is provided, including a support body, a movable portion, an elastic assembly, and a driving assembly. The movable portion is located in the support body. The movable portion is movable relative to the support body and is used to connect to an optical element. The elastic assembly is movably connected to the support body and the movable portion. The driving assembly is disposed on the support body and the movable portion, and is configured to drive the movable portion to move relative to the support body.